Intermediary metabolism of carbohydrate by Erwinia amylovora.

Erwinia amylovora ferments glucose to yield mainly ethanol, lactate, and carbon dioxide (Sutton and Starr, 1959). The initial steps in the o.xidation of glucose by this bacterium were reported by Katznelson (1955), who later (Katznelson, 1958) showed the presence of certain key enzymes of the Embden-Meyerhof pathway in sonic extracts. The present study, briefly summarized elsewhere (Sutton and Starr, 1958), extends our knowledge of the separate enzymatic steps and reports the results of tracer experiments which suggest the effective operation of the Embden-Meyerhof pathway in whole cells.